Nosing-plane.



W. G. BEST & M. SYMONS.

NOSING PLANE. APPLICATION FILED MABJQ. 1912;

1",52, 88l Patented Feb.11,1913.

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To all. whom it may conce'm Be it knownthat we, WILLIAM G. Beer and MAN-SELL SYMONS, citizens of the. United "States; -and residents ofOlyphant borough, county 'of Lackawanna, State" of {Pennsyl- Vania, have invented certain new and useful Improvements in 'Nosing-Planes," of which the following is a full and clear specificacutting edge of the bit extenda'and the side tion, reference-being had to the accompanying drawing, in 'whichi Figure 1 is a view partly in side elevation and partly in vertical sectionof, our improved plane; Fig. 2 is a front end elevation thereoit'; and Figs. 3, 4, 5 and 6 detail views of-parts hereinafter described. I

Thisinvention. has relation to improvements' upon that type of hand plane which is provided with a longitudinal channel in its working face curved incross section and a bit having a similarly curved notch in its. cutting edge whereby the plane is adapted for planing nosings, and the object ,of the present improvements is to adapt the plane for working upon curved surfaces of different radii, as more fully hereinaftersetforth.

In the drawing, a designates the body of the plane grooved longitudinally at Z) in its working face as-usual. The bit 0 is provided at one end with the usual curved notch cl which forms a curved cutting edge corresponding to'the groove in the body of the planewhen the bit is clamped properly in place. To clamp the bit in place we employ the usual clamp plate c and clamp screws f a and g. The bit is adjusted up and down by means or" a plate h which is slidingly fastened to the inclined body lug c, said plate it being provided with a pair of pins j near its lower end adapted. to enter corresponding holes. is in the'bit, whereby when the said plate h is moved up and down the bit will be moved accordingly. -A screw Z and a nut m are employed to-move the plate It up: and

down, .and' a pair of screws n threaded through slots 0 serve to clamp tlieplateh against the body lug i and at the same time allow the plate h to be adjusted longitudinally.

To adapt the plane for use on a nosing differing in curvature from the groove Z) and the cutting edge d, we provide a supplemental shoe illustrated in Fig. 6 and consisting of vertical side flanges p and a bottom plate e men:salesman. lea-tented sen Application filed March is, an.

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' having its upper face curved to fit into tin groove 6 and its lower face longitudinally grooved at 1r to fit the nosing, this groove being curved incross section, the radiusof the curvaturecbeii g. ditterent from that of the grooveor channel '11) in the body of the plane. This shoe is provided with an inclined" transverse slot 8' through which the walls are -provided. with screw threaded openings t for the passage of clamp screws u for detachably' attaching "this shoe to the main body of the plane. v

.The bit isprovided at the end opposite the cutting edge d, with a cutting edge e curved to correspond with the curvhture of the channel r; and the bit is made reversible endlor end so that either cutting edge may be brought into requisition I In order that the clamping and adjusting devices of the bit may operate as welLwith one end of the bit in use as with the other, the holes it, 72 are duplicated at Zfand the slot to through which the screw extends is" duplicated at to, these two slots to and to being connected byan enlarged opening at for the passage of the head of the screw f when the bit is'removed or put in position. Having thus described our invention, what we claim as new and desire to secure by Letters Patent; is-

ln coinbination with a nosing plane having in its working face a longitudinal groove curved in cross section, a detachable shoe for said working face having. a longitudinal groove in its own working face, said groove being curved in cross section and having a different curvature from the groove in the plane body, said shoe being convex on its upper side to adapt it to fit within the groove in the plane body, the shoe and the planebody being provided with registering bit openings, and means for detachably att-aching said shoe to the plane body, where- ,by bit cutting edges of different curvatures may be interchangeably employed.

in testimony whereof we hereunto atiix our signatures in the presence of two witnesses this 8th day of March 1912.

WILLIAM G; BEST. MANSELL SYMONS Witnesses llARRY NEEDLE, Josrrn BEST. 

